CN105339938A - Efficient fetching of map tile data - Google Patents

Efficient fetching of map tile data Download PDF

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Publication number
CN105339938A
CN105339938A CN201480036114.XA CN201480036114A CN105339938A CN 105339938 A CN105339938 A CN 105339938A CN 201480036114 A CN201480036114 A CN 201480036114A CN 105339938 A CN105339938 A CN 105339938A
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map
map tile
tile
request
computer
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亚廷·查瓦特
尼古拉斯·李
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Google LLC
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Google LLC
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/29Geographical information databases
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/953Querying, e.g. by the use of web search engines
    • G06F16/9537Spatial or temporal dependent retrieval, e.g. spatiotemporal queries
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/957Browsing optimisation, e.g. caching or content distillation
    • G06F16/9574Browsing optimisation, e.g. caching or content distillation of access to content, e.g. by caching

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Processing Or Creating Images (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

A method for efficiently fetching map tiles for digital maps includes receiving, at a client device such as a mapping user interface device, a request to display a digital map and identifying a plurality of map tiles for the request, each map tile representing a portion of the digital map. The user interface device generates a single map content request including multiple identifiers corresponding to the plurality of map tiles. The user interface device then sends the map content request to a map content server as a single request requesting multiple map tiles. In response to the map content request, the map content server retrieves the plurality of map tiles from a content database and sends the plurality of map tiles to the client device. The client device can then display the digital map based on the plurality of map tiles.

Description

Effectively obtaining of map tile data
Technical field
Disclosure relate generally to is display word map on a client device, particularly relate to acquisition and retrieving map content for display word map.
Background technology
It is present context of the present disclosure in general manner that background technology provided in this article describes object.The work (degree to described by background technology part) of the inventor of current nomination and can not be described as in addition when submit applications this description of prior art in, both also impliedly do not admitted to be the prior art relative with the disclosure ambiguously.
Numerical map is generated by the set (such as, the image of 256 × 256 pixels) of assembling map tile usually.According to grid, vector or combination picture format, the content of map tile can comprise shade, color, road, navigation way, label, mark, building footprint etc.When receiving from the geographic query of user or other inputs, the correlation map tile of mapping application identification assembling needed for numerical map, and to the required map tile (that is, mapping application " obtaining " map tile) of server request.
Current, browser or mapping application ask to obtain each map tile individually via the independently HTML (Hypertext Markup Language) (HTTP) of each rectangle part to the numerical map shown in map viewport.But typical browser only can have a limited number of concurrent unsettled HPPT asks.In addition, the communication overhead amount that request significantly increases transmission map datum is sent for each map tile.
Summary of the invention
Technology of the present disclosure allows by the request of the various different map tile for the numerical map that will show being concentrated as single content requests (herein also referred to as " many tiles " request), more effectively to obtain the map tile needed for assembling numerical map from map content server.The single content requests pointing to map content server can comprise the identification of multiple map tile, makes obtain multiple map tile and do not need multiple content requests.The map tile identified in multiple content requests forms the continuous part of numerical map usually.But by sending the request of many tiles to server, can obtain any set of map tile, wherein the request of many tiles comprises the identification of the identification of Reference Map tile and other map tile multiple relative to Reference Map tile.
According to an embodiment, a kind ofly to comprise for the computer implemented method obtained for the map tile of numerical map: receive the request being used for display word map via user interface; Utilize the multiple map tile of processor identification, each map tile represents a part for described numerical map; And generating single map content requests, described single map content requests comprises the multiple identifiers corresponding with described multiple map tile.In addition, described method to comprise described map content request forwarding via computer network to server; In response to described map content request, receive described multiple map tile via described computer network from described server; And based on described multiple map tile, show described numerical map via described user interface.
According to another embodiment, a kind of computer equipment for effectively obtaining map tile comprises: one or more processor; And be coupled to one or more storeies of described one or more processor; Wherein said one or more storer comprises wherein stored computer executable instructions, described computer executable instructions, when being performed by described one or more processor, makes described one or more processor: receive the request to display word map via user interface.In addition, the multiple map tile of described one or more processor identifications, each map tile represents a part for described numerical map; Generate single map content requests, described single map content requests comprises the multiple identifiers corresponding with described multiple map tile; Via computer network by described map content request forwarding to server.In response to described map content request, described one or more processor receives described multiple map tile via described computer network from described server; And based on described multiple map tile, show described numerical map via described user interface.
According to another embodiment, a kind ofly to comprise for the method for retrieving map tile in the network device: receive the request to the map datum comprising multiple map tile from client device, wherein, the described request to map datum comprises the multiple identifiers corresponding with described multiple map tile.In addition, described method comprise utilize one or more processor resolve the described request to map datum, with the described multiple map tile of set identification based on unique identifier and relevant identifier; Utilize one or more processor from multiple map tile described in map content database retrieval; And the map tile of request is supplied to described client device.
According to another embodiment, a kind of computer equipment for effectively obtaining retrieving map tile comprises: one or more processor; And be coupled to one or more storeies of described one or more processor; Wherein, described one or more storer comprises wherein stored computer executable instructions, described computer executable instructions is when being performed by described one or more processor, make described one or more processor: receive the request to map datum from client device, described map datum comprises the multiple identifiers corresponding with multiple map tile.In addition, the request to map datum resolved by described one or more processor, identify multiple map tile with the set based on unique identification and Classical correlation, from the multiple map tile of map content database retrieval, and asked map tile is supplied to client device.
According to another embodiment, a kind of equipment comprises: for receiving the device of the request being used for display word map via user interface; For utilizing the device of the multiple map tile of processor identification, each map tile represents a part for described numerical map; And for generating the device of single map content requests, described single map content requests comprises the multiple identifiers corresponding with described multiple map tile; For via computer network by described map content request forwarding to the device of server; For in response to described map content request, receive the device of described multiple map tile from described server via described computer network; And for based on described multiple map tile, show the device of described numerical map via described user interface.
Accompanying drawing explanation
Fig. 1 illustrates example computing device, effectively can obtain map tile wherein for display word map.
Fig. 2 illustrates example client end equipment, and this client device can generate the request of many tiles, and may be implemented as a part for the computing environment illustrated in Fig. 1.
Fig. 3 A and Fig. 3 B illustrates the example embodiment of the prior art for obtaining map tile.
Fig. 4 illustrates the example embodiment of many tiles request that can realize in the exemplary computing environments illustrated in Fig. 1.
Fig. 5 is the process flow diagram of the exemplary method for effectively obtaining map tile that can realize in the example computing device illustrated in Fig. 1.
Fig. 6 illustrates the example tag for map tile or the index scheme of a part for the exemplary method that may be implemented as Fig. 5.
Fig. 7 be can realize in the example computing device illustrated in Fig. 1 for generating and sending the process flow diagram of the illustrative methods of many tiles request from client device to server.
Fig. 8 is the process flow diagram of the exemplary method for serving the many tiles request from client device that can realize in the example computing device illustrated in Fig. 1.
Embodiment
Technology of the present disclosure allows effectively to obtain the map tile of assembling needed for numerical map from map content server.Single content requests for map content server comprises the multiple map tile of identification, makes to obtain multiple map tile when not needing multiple content requests.The map tile identified in many tiles content requests forms the continuous part of numerical map usually.But by sending the request of many tiles to server, can obtain any set of map tile, wherein the request of many tiles comprises the identification of multiple map tile.In some cases, each map tile identification can be complete or unique identification.But, in other cases, the request of many tiles can comprise the complete or complete identification of a map tile in the multiple map tile in this many tiles request, and can comprise for other map tile in this many tiles request abbreviation or the identification of index, wherein the tile identification of index is such as quoted by the tile by which providing complete identification, to reduce the traffic needed for all map tile of request.
Fig. 1 illustrates the example computing device 100 that effectively can obtain map tile wherein via the request of many tiles.Example computing device 100 comprises the client device 102 that can be coupled to network 104 communicatedly.Exemplarily, client device 102 can be smart phone, flat computer, laptop computer, desktop computer, geo-positioning system (GPS) receiver etc., and with reference to Fig. 2, the more details of example client end equipment is discussed.It is one or more that communication network 104 can comprise in LAN (Local Area Network) (LAN), WLAN, wide area network (WAN), mobile communications network, internet or any other suitable publicly-owned or privately owned wired or wireless communication network.
In some embodiments, client device 102 can perform mapping application with to user's display word map, and wherein numerical map comprises the map content downloaded from map content server 106.Such as, mapping application can be available at the application on site shop place being arranged in map content server 106 or application server (not shown) place.The user of client device 102 can from the copy of application server retrieves mapping application, and the copy " installation " retrieved mapping applied is on client device 102.As an alternative, client device 102 can show mutual mapping application in network browser application.
In some scenes, client device 102 can show the numerical map constructed from multiple map tile (such as, the image of 256 × 256 pixels).Such as, the user of client device 102 can identify interested region via geographic query, and mapping application can show the numerical map in the interested region from multiple rectangle map tile structure, and each rectangle map tile represents the rectangle part in interested region.In order to serve these client-requested, mapping application can obtain correlation map tile via the request of many tiles, as described below.
In embodiments, the map tile forming a part for numerical map is by overlapping, bending and/or otherwise combine following generation: the background grating image stored in the vector graphics stored in (i) vector database 108 and (ii) background raster database 110.Exemplarily, vector database 108 can comprise the geometry restriction to building footprint, tag/label position, road fragment, navigation way etc.Such as, background grating image can comprise the grating image of display terrain information, less road, residential quarter etc.In some embodiments, generate engine 112 by content and generate vector graphics, background grating image and result map tile.Such as, content generates engine 112 can generate map content (such as, vector/grating image and map tile) via batch processing, and map content server 106 can real-time retrieval map content, to serve client-requested.In other cases, map tile can consist of grating image completely or consist of vector graphics image completely.
Fig. 2 illustrates example client device 150, and client device 150 can obtain map tile effectively via the request of many tiles.Client device 150 comprises can the display device 152 of display word map thereon, such as liquid crystal display (LCD), light emitting diode (LED) display, organic LED (OLED) display etc.In addition, client device 150 comprises: network interface 154, to contribute to being communicated by network (such as network 104); CPU156, for the computer-readable instruction stored in execute store 158; And Graphics Processing Unit (GPU) 160, for presenting the image that will show on display device 152.
In some embodiments, storer 158 can comprise mapping application 164.Such as, mapping application 164 can comprise: tile request routine 168, for generating many tiles content requests; And map denotation routine 170, for constructing and display word map based on received map tile.In some embodiments, storer 158 can also store multiple coloring process (not shown), described multiple coloring process is for describing and/or limit the characteristic (such as, position, color etc.) of the parts of images that will show on display device 152.Such as, multiple coloring process can comprise pixel shader program, vertex shading program, geometry coloring process etc., and it can be performed by GPU160.In other embodiments, multiple coloring process can be the part of one or more coloring process " pipeline " in GPU160, as in one embodiment known in industry.
For the sake of clarity, Fig. 3 A and Fig. 3 B illustrates the example embodiment of existing map tile acquisition of technology.In existing embodiment, be sent to map content server 202 by the content requests (such as HTML (Hypertext Markup Language) (HTTP) request) of each map tile (as illustrated in the multiple arrows being labeled as tile 1-tile N) needed for structure numerical map from client device 200.Subsequently, map content server 202 is from content data base 204 retrieving map tile 1-N, and when they are received or generate, each in map tile 1-N is sent it back client device 200, as be labeled as tile 1-tile N in Fig. 3 B multiple arrows illustrated in.But, when the number of content requests exceedes browser restriction, content requests that is that use multiple content requests to cause significant communication overhead amount and/or queuing in existing map acquisition of technology or retardance.
On the contrary, technology of the present disclosure can utilize single content requests to obtain multiple map tile.Therefore under many circumstances, technology of the present disclosure significantly can reduce communication overhead and prevent content requests that is that queue up or that pause.In addition, compared with arriving map content server with the set of whole multiple content requests, single content requests can arrive map content server quickly, therefore to provide to map content server with regard to request content and notify more timely, and compared with the request received in the message sent continuously for individual map tile, allow map content server more promptly to start to obtain or generate all asked map tile.
Fig. 4 illustrates the example embodiment of disclosure technology, utilizes single many tiles request to obtain multiple map tile wherein.In exemplary scene, client device 300 can identify the new portion of display word map or the multiple map tile (such as, via geographic query or zoom operations) needed for different piece.And then in exemplary scene, client device 300 can construct many tiles content requests, and this request is sent to map content server 302 (as illustrated in the single arrow being labeled as " request of many tiles ").
Map content server 302 can analyze the request of many tiles, to identify the individual tile of being asked by client device 300 and to retrieve individual tile (tile 1-tile N), illustrated in the multiple arrows between map content server 302 and content data base 304 from content data base 304.The map tile retrieved can be grating image map tile, such as, be stored in raster database 110, also can be vector graphics map tile, such as, be stored in (Fig. 1) in vector database 108.Therefore in this embodiment, obtain multiple map tile, do not need multiple content requests.When obtaining these tiles, each retrieved or acquired map tile still can be sent it back client device, to ensure sent by client device as early as possible and receive tile by map content server in discrete message.
Fig. 5 is the process flow diagram of the exemplary method 400 for obtaining map tile via the request of many tiles.Such as, method 400 can be implemented in client device 102.At block 402 place, identify the set of the map tile of assembling needed for numerical map.In some embodiments, in response to the set of geographic query identification map tile.Such as, the user of client device 102 can via the instruction of keyboard, touch-screen or other user interface input region of interest, and client device 102 can identify the set of the map tile corresponding with area-of-interest.As an alternative, the user of client device 102 can perform zoom operations, diversified contents selection (such as the selection of instruction display flow information) or require to be identified as other operations of the additional maps content of new map tile set.
Then (at block 404 place), client device generates the request of many tiles, and wherein the request of many tiles comprises the identifier of each in the map tile set of structure needed for numerical map.In some embodiments, the request of many tiles can specify Reference Map tile (such as with absolute value, use x and y coordinate, latitude/longitude coordinates, map tile ID numbers, or identify any other complete or complete recognition methods of map tile uniquely), and specify residue tile with relative value.Such as, the request of many tiles can be specified tile (132,124) and adjacent tiles is listed as and be had coordinate (+1,0), (+2,0) ... (+1 ,+1), (+2, + 1) ..., all measure relative to (132,124).If needed, then the request of many tiles can also specify map tile with absolute value, and according to any suitable form specified boundary frame (such as, all adjacent tiles, 5 tiles below, 10 tiles on the right), so that server can provide all tiles belonging to bounding box.In embodiments, in this way, the restriction of 2000 characters of the URL(uniform resource locator) (URL) used in HTTP request at present can not prevent client device from single request, asking a large amount of tiles.The more details of the method for generating and send the request of many tiles are described referring to Fig. 7.
For the sake of clarity, Fig. 6 illustrates the example collection of map tile, it surrounding's map tile comprising Reference Map tile and specified by relative coordinate.In the example collection of map tile, marked with reference to tile by coordinate (x, y), and mark map tile around with the increment of map tile size.Such as, mark with coordinate (+1,0) in the map tile with reference to the direct right side of tile, and the map tile above direct with reference to tile marks with coordinate (0 ,+1).In this way, the set of map tile can be identified in the request of many tiles via relative coordinate.Although not shown in Fig. 6, Reference Map tile identifier also can comprise other information, the zoom level of such as map tile, map view of being associated with asked map tile etc.But under many circumstances, the map tile (that is, the map tile specified by index Reference Map tile) of index does not need comprise zoom level identifier, map view identifier or usually show or other information identical for whole map tile that specific single map image is associated for being sent to.This feature further reduces the information needing to send in the request for multiple map tile.
Although the set of map tile is illustrated as the continuous collection of map tile by Fig. 6, the set of the map tile of specifying in the request of many tiles can comprise separation or discrete map tile.Such as, when new map tag or reselect map layer, each discrete point place on numerical map may need new map content.In this case, client device (such as client device 102) can generate and specify and many tiles request of each non-adjacent map tile.Such as, at random or in addition can select Reference Map tile, and remaining non-intersect map tile can be identified relative to the coordinate of Reference Map tile.
In addition, in embodiments, the map tile identified in the request of many tiles can comprise the map tile of various sizes.Such as, in order to show map according to various ratio, raster database 110 can comprise the map tile based on grid of various sizes.In this case, together with Reference Map placement of tiles and relative map placement of tiles, the request of many tiles can comprise the instruction of zoom level or ratio.Such as, specific mapping application can show map according in 18 map zoom level, and the many tiles request generated by mapping application can comprise the number between 1 and 18, to identify the relevant convergent-divergent relevant with geographic query or ratio.
Return Fig. 5, at block 406 place, the request of many tiles is sent to map content server from client device, such as map content server 106.Such as, the request of many tiles can send as single HTTP request via network interface 154 by client device 150.Then at block 408 place, the individual map tile corresponding with the map tile identified the request of many tiles is received from map content server.In embodiments, the tile received can comprise any one in grating image tile, vector image tile and supplementary tile or combine.Such as, client device can receive supplementary tile (such as comprising litura, shade, texture etc.), to mix with grating image tile.In some embodiments, based on geographic query character or trigger the operation of many tiles request, client device can receive only vector image tile, or receives only grating image tile.Such as, can trigger for based on the tile of vector and the request of the non-tile based on grid for the request of annex information.
At block 410 place, present the numerical map for showing based on received map tile.Such as, client device 102 can sew up, bend, overlapping or otherwise combine the map tile that receives to generate the numerical map for display on display device 152.In some embodiments, client device 102 can receive individual map tile in the various different time.In this case, client device 102 can based on the subset of received map tile, the part of a display word map.Then, such as when receive more figure tile time, client device 102 can other parts of display word map.
Fig. 7 is for generating and the request of many tiles being sent to such as at the process flow diagram of the exemplary method 450 of the operable server of block 404 of Fig. 5 from client device.But, can according to any other mode realization example method 450 in client device 150.
At block 452 place, determine the geographic area needing new map tile.Such as, tile request routine 168 can process geographic query, to determine interested region.Such as, if the user of client device 150 is via the search inquiry of user interface input for " Chicago ", then mapping application 164 can resolve search inquiry (as this industry is known), to identify the area comprising city, Chicago.In another scene, the user of client device 150 can from the view in the view convergent-divergent of adjoining area, Chicago/move to city, whole Chicago.In this scene, tile request routine 168 can determine the map tile needed for geographic area of adjoining area of city, all Chicago and non-present viewing.
Then (at block 454 place), the specific collection of the map tile corresponding with the geographic area and zoom level that show map for it is determined.Such as, tile request routine 168 can determine quantity and/or the position of new map tile by the amount, the geographical size (such as, city size, Country Scale etc.) of geographic query, the bounding box of numerical map viewport etc. of convergent-divergent or translation.Tile request routine 168 can be determined, in viewport, visible whole map tile deducts the set that map tile that mapping applies 164 current uses is exactly the map tile of mapping application required for 164 wholly or in part.
At block 456 place, in the map tile set identified is chosen as Reference Map tile and assigns unique identifier for it at block 454 place.Such as, tile request routine 168 can select to have the map tile of position, bosom, position in current or desired map viewport near the map tile of the mean place of the set as the map tile with reference to map tile, the map tile being in a corner of the whole geographic area into its request map tile etc.In some embodiments, tile request routine 168 can according to latitude and longitude or any other suitable coordinate system, to Reference Map assignment or determine unique identifier.Such as, corresponding with Reference Map tile coordinate can indicate latitude and the longitude of map tile barycenter.
At block 458 place, determine relevant identifier and be assigned to the residue map tile in the specific collection of map tile.Such as, tile request routine 168 can assign representative relative to the positive integer value of this map tile position of Reference Map tile and negative integer value to residue map tile, following with reference to Fig. 5 further described in.In other embodiments, tile request routine 168 can assign according to suitable unit (such as, rice, foot etc.) relative coordinate representing relative distance to remaining map tile.Such as, tile request routine 168 can assign map tile coordinate (x r, y r), wherein x rand y rthe thing Distance geometry north and south distance between the barycenter of Reference Map tile and this map tile respectively.In some cases, each in other map tile (such as, the map tile of index) can be specified separately.In other cases, other map tile can be appointed as the group with group's index, all map tile such as in Reference Map tile certain distance or space, all map tile adjacent with Reference Map tile etc.
In some embodiments, to each appointment unique identifier of map tile set, this unique identifier can be used for independently identifying map tile.Such as, client device 150 can assign absolute latitude and longitude coordinate, unique map tile identifier or any other suitable unique identifier to each in map tile set.In these embodiments, can the block 456 and 458 of combined method 450, thus unique identifier is assigned to each of map tile set.Such as, client device can to the set of map tile Set Assignment integer identifiers, and such as { (132,124), (133,124) ..., (137,128), wherein each integer identifiers identifies in map tile set uniquely.
Then (at block 460 place), generate the request of many tiles, described many tiles request comprises the coordinate of Reference Map tile and the relative coordinate of residue map tile, each wherein in relative coordinate set specifies the group of single map tile or map tile, or comprises each the corresponding unique identifier with map tile set.Such as, the request of many tiles can be HTTP request, can comprise request line, head and null, as industry is known.Such as, the request of many tiles can comprise alphanumeric character, symbol or Reference Map tile and residue map tile any other suitable coordinate represent.Then at block 462 place, the request of many tiles is sent to map content server, such as map content server 106.Such as, the request of many tiles can be sent to map content server 106 via network interface 154 by client device 150.
Fig. 8 is the process flow diagram for the exemplary method 500 of serving the many tiles request received by map content server.Such as, method 500 can realize in map content server 106.Here, at block 502 place, the request of many tiles is received from client device.Such as, map content server 106 can receive the request of many tiles as single HTTP request via network 104.Subsequently, at block 504 place, resolve the request of many tiles to determine the individual map tile identified in the request of many tiles.Such as, resolve any one that the request of many tiles can comprise in the known multiple analytic technique of industry, such as identify separator, generate signature/grammer etc.In some embodiments, map content server 504 can perform the series of computation machine instructions of such as resolving script, to resolve the request of many tiles via the known rule for many tiles request format.Such as, map content server 504 can perform script, and this script resolves the request of many tiles based on the expression width of map tile or the integer of increment, and wherein known round values is present in some position in the request of many tiles.
At block 506 place, from the individual tile that content-data library searching is corresponding with the individual tile identified the request of many tiles.In some embodiments, map content server 106 can generate and each the corresponding data base querying in the map tile identified in the request of many tiles, such as SQL query or MapReduce function.Then, map content server 106 can be inquired about by performing database on raster database 110 or vector database 108, and receives the result of map tile as inquiry.
In some embodiments, the retrieval of individual map tile can distribute across multiple processor.Such as, after parsing many tiles request, map content server 106 can distribute the retrieval of individual map tile, makes via different processors from each map tile of database retrieval.In addition, the retrieval of grid and vector content can be distributed in multiple processor by map content server, makes by retrieving the grid contents corresponding with certain map tile from for the processor retrieved corresponding to the processor of the vector content of certain map tile is different.
Then (at block 508 place), the individual tile retrieved from content data base is sent to client device.In some embodiments, map content server 106 when retrieving map tile from raster database 110 or vector database 108, can send it to client device 102.Therefore, such as, client device can start display section numerical map when new map tile is available.As an alternative, in embodiments, map content server 102 can by the communication priorization of map tile.Such as, map content server 102 can send grid contents before vector content, before the map tile for another geographic area, send the map tile being used for a geographic area, sent before not too relevant map tile and the maximally related map tile of inquiry, etc.
Technology of the present disclosure utilizes single content requests to obtain multiple map tile.Therefore, technology of the present disclosure significantly can reduce communication overhead, and under a lot of scene, prevent content requests that is that queue up or that pause.In addition, single content requests can provide the timely notice of institute's request content to map content server, and with receive in the message sent continuously for individual map tile request compared with, permission map content server more promptly starts to obtain or generate all asked map tile.
additional consideration
Following additional consideration is applicable to above discussion.In whole instructions, multiple example can realize being described to the assembly of single example, operation or structure.Although the individual operations of one or more method illustrated and be described as discrete operation, one or more independent operation can perform simultaneously, and does not require according to illustrated order executable operations.The 26S Proteasome Structure and Function presented as discrete assembly in exemplary configuration may be implemented as unitized construction or assembly.Similarly, the 26S Proteasome Structure and Function presented as single component may be implemented as discrete assembly.These and other changes, amendment, supplement and improvement all fall into the scope of theme of the present disclosure.
In addition, some embodiment is described as comprising logic or multiple assembly, module or mechanism herein.Module can form software module (code that such as machine readable media stores), also can form hardware module.Hardware module can be the tangible unit that can perform some operation, and can configure according to some mode or arrange.In the exemplary embodiment, by software (such as, application program or application program part) by one or more computer system (such as, unit, client or server computer system) or one or more hardware modules (such as, the group of processor or processor) of computer system be configured to hardware module of operating to perform some operation as herein described.
In various embodiments, mechanically or electronically hardware module can be realized.Such as, hardware module can comprise special circuit or the logic (such as, as application specific processor, such as field programmable gate array (FPGA) or special IC (ASIC)) of permanent configuration, to perform some operation.Hardware module can also comprise by software provisional configuration with the FPGA (Field Programmable Gate Array) performing some and operate or circuit (such as, as being included in general processor or other programmable processors).Should be appreciated that and can be driven in special permanent configuration circuit by cost or time consideration or in the circuit of provisional configuration (such as, by software merit rating), mechanically be realized the decision-making of hardware module.
Therefore, term hardware is appreciated that and comprises tangible entity, namely physique, permanent configuration (such as, by hardwire) or provisional configuration (such as, being programmed) become to operate in some way or perform the entity of some operation as herein described.Consider that hardware module is by the embodiment of provisional configuration (such as, being programmed) wherein, each in hardware module does not need to be configured according to the time at any one example place or to illustrate.Such as, when hardware module comprises the general processor using software to configure, general processor can be configured to each different hardware module in the different time.Therefore, software can configuration processor, such as, in an example of time, form specific hardware module, and form different hardware modules in the different examples of time.
Hardware and software module can provide information to other hardware and/or software module, and receives information by it.Therefore, described hardware module can be considered and is coupled communicatedly.Under multiple such hardware or the simultaneous situation of software module, realize communicating by the Signal transmissions (such as, by suitable circuit and bus) connecting hardware or software module.With different time configure or illustrative multiple hardware module or software embodiment in, such as by store and in memory construction that multiple hardware or software module are accessed the retrieval of information to realize the communication between these hardware or software module.Such as, a hardware or software module can executable operations the output of this operation being stored in the memory devices be coupled with communicating with.Then, other hardware or software module can access the output that memory devices stores with retrieval and process afterwards.Hardware and software module can also be initiated and the communication inputing or outputing equipment, and can in the enterprising line operate of resource (such as, the collection of information).
The various operations of exemplary method described herein can be performed at least in part by provisional configuration (such as, by software) or the one or more processors being forever configured to perform associative operation.No matter be interim or forever configure, these processors can form the module that operation realizes with the processor performing one or more operation or function.In some example embodiments, the module involved by this paper can comprise the module that processor realizes.
Similarly, methods described herein or routine can be that processor realizes at least in part.Such as, the hardware module that at least some in the operation of method can be realized by one or more processor or processor perform.The performance of some operation can be distributed between one or more processor, not only resides in individual machine, and is deployed as across multiple machine.In some example embodiments, processor or multiple processor can be placed on single position (such as, in home environment, in office environment, or as server zone), and in other embodiments, processor can be distributed as across multiple position.
One or more processor also can operate into and be supported in " the performance of the associative operation in cloud computing environment or as SaaS.Such as, as above indicated by, the at least some in executable operations can be carried out by computing machine group (example of machine as comprising processor), these operations can visit via network (internet) and via one or more suitable interface (such as, API).
The performance of some operation can be distributed between one or more processor, not only resides in individual machine, and disposes across multiple machine.In some example embodiments, the module that one or more processor or processor realize can be placed in single geographic position (such as, in home environment, in office environment, or as server zone).In other example embodiment, the module that one or more processor or processor can be realized is across multiple location distribution.
Some part of this instructions is according to algorithm or represent to present about the symbol of the operation of data (being stored as bit or binary digital signal in machine memory (such as, computer memory)).These algorithms or symbol represent it is the example of the technology of others skilled in the art that their work essence passed to that data processing field those of ordinary skill uses.As used herein, " algorithm " or " routine " be bring the operation of expected result or similar process from concensus sequence.In border, this field, algorithm, routine and operation relate to the physical manipulation of physical quantity.Typical case but not necessarily, this tittle can adopt electrically, the form of magnetic or optical signalling, described signal can be stored, accesses, shifts, combines, compares or otherwise be handled by machine.Sometimes in principle in order to the reason of public use, use that such as these signals consulted in the word such as " data ", " content ", " bit ", " value ", " element ", " symbol ", " char ", " term ", " number ", " quantity " is easily.But these words are only labels easily, and be associated with suitable physical quantity.
Unless otherwise specified, use the discussion of such as " process ", " calculating ", " determination ", " presenting ", " display " etc. word can refer to manipulation or the action of transform data or machine (such as herein, computing machine) process, described data are represented as one or more storer (such as, volatile memory, nonvolatile memory or their combination), register or receive, store, transmit or display information other machines assembly in physics (such as, electronics, magnetic or optics) amount.
As used herein, any all to comprise at least one embodiment in conjunction with the particular element described by this embodiment, feature, structure or characteristic with reference to all to mean for " embodiment ".Places different in the description, the appearance of word " in one embodiment " differs to establish a capital and refers to identical embodiment.
Can, together with its derivant, expression way " coupling " be used to describe some embodiments with " connection ".Such as, term " coupling " is used to describe some embodiments to indicate two or more element direct physical or electrical contacts.But term " coupling " also can mean that two or more elements directly do not contact mutually, but still cooperation or mutually mutual.Embodiment is not limited to this border.
As used herein, term " comprises " " comprising " " has " or any other modification is all intended to contain nonexcludability and comprises.Such as, comprise the process of element list, method, goods or device and be not necessarily only limitted to these elements, also can comprise clearly do not list or in be contained in other elements of these process, method, goods or device.In addition, unless clearly there is contrary explanation, "or" refer to comprising property or, instead of XOR.Such as, to be satisfied condition A or B:A true (or presenting) and B vacation (or not presenting), A vacation (or not presenting) and B true (or presenting) by any one in following, and all true both A and B.
In addition, the use of " " is adopted to and describes element in herein embodiment and assembly.This just conveniently completes with the general sense providing description.This description should be understood to comprise one or at least one, and singulative also comprises plural number, unless obviously referred else.
When reading the disclosure, those skilled in the art are structural and functional design by the additional alternative that is to be understood that for effectively being obtained map tile by principle disclosed herein.Therefore, although illustrate and describe specific embodiment and application, should be appreciated that the disclosed embodiments are not limited to precision architecture disclosed herein and assembly.Apparent various amendment, change and change to those skilled in the art can be made in the details of layout disclosed herein, operation and method and apparatus, and not depart from spirit and scope defined in the appended claims.

Claims (29)

1., for obtaining a computer implemented method for the map tile for numerical map, described method comprises:
The request being used for display word map is received via user interface;
Utilize the multiple map tile of processor identification, each map tile represents a part for described numerical map;
Generate single map content requests, described single map content requests comprises the multiple identifiers corresponding with described multiple map tile;
Via computer network by described map content request forwarding to server;
In response to described map content request, receive described multiple map tile via described computer network from described server; And
Based on described multiple map tile, show described numerical map via described user interface.
2. computer implemented method according to claim 1, wherein, described multiple identifier comprises the unique identifier of a map tile in described multiple map tile and the set of the relevant identifier corresponding with other map tile in described multiple map tile.
3. computer implemented method according to claim 2, wherein, the described unique identifier of the described map tile in described multiple map tile comprises latitude and longitude coordinate.
4. the computer implemented method according to Claims 2 or 3, wherein, the set of described relevant identifier comprise instruction relative to the described map tile in described multiple map tile position, in described multiple map tile described in the integer increments of position of other map tile.
5. according to computer implemented method in any one of the preceding claims wherein, wherein, described multiple map tile comprises the rectangle part of described numerical map, and described rectangle part forms the branch of described numerical map.
6. according to computer implemented method in any one of the preceding claims wherein, wherein, described single map content requests is HTML (Hypertext Markup Language) (HTTP) request.
7. according to computer implemented method in any one of the preceding claims wherein, wherein, described multiple map tile comprises at least one in grating image map tile or vector graphics map tile.
8. computer implemented method according to claim 7, wherein, described multiple map tile comprises at least one grating image map tile, and described grating image map tile comprises the grating image of at least one in map shade, texture, background, road or nature geography characteristic.
9. computer implemented method according to claim 7, wherein, described multiple map tile comprises at least one vector graphics map tile, and wherein said vector graphics map tile comprises the geometric representation of building footprint, label position, mark or three-dimensional model.
10. according to computer implemented method in any one of the preceding claims wherein, wherein, identify multiple map tile, each map tile represents a part for described numerical map, comprising: identify the map tile falling into current map viewport in whole or in part.
11. according to computer implemented method in any one of the preceding claims wherein, and wherein, identify multiple map tile, each map tile represents a part for described numerical map, comprising: identify the map tile corresponding with geographic query.
12. according to computer implemented method in any one of the preceding claims wherein, and wherein, identify multiple map tile, each map tile represents a part for described numerical map, comprising: identify the map tile be associated with convergent-divergent or translation.
13. according to computer implemented method in any one of the preceding claims wherein, wherein, the described map tile in described multiple map tile has the map tile of at least one in the center in described multiple map tile or the center in map viewport.
14. 1 kinds for effectively obtaining the computer equipment of map tile, described computer equipment comprises:
One or more processor; And
Be coupled to one or more storeies of described one or more processor;
Wherein, described one or more storer comprises wherein stored computer executable instructions, and described computer executable instructions, when being performed by described one or more processor, makes described one or more processor:
The request being used for display word map is received via user interface;
Utilize the multiple map tile of described one or more processor identifications, each map tile represents a part for described numerical map;
Generate single map content requests, described single map content requests comprises the multiple identifiers corresponding with described multiple map tile;
Via computer network by described map content request forwarding to server;
In response to described map content request, receive described multiple map tile via described computer network from described server; And
Based on described multiple map tile, show described numerical map via described user interface.
15. computer equipments according to claim 14, wherein, described multiple identifier comprises the unique identifier of a map tile in described multiple map tile and the set of the relevant identifier corresponding with other map tile in described multiple map tile.
16. computer equipments according to claim 15, wherein, the set of described relevant identifier comprises multiple relevant identifier, and each relevant identifier specifies single additional maps tile.
17. computer equipments according to claim 15 or 16, wherein, the set of described relevant identifier comprises the relevant identifier of the group specifying additional maps tile.
18. computer equipments according to claim 17, wherein, the group of described additional maps tile is designated as bounding box.
19. computer equipments according to claim 17 or 18, wherein, the group of described additional maps tile is designated as and comprises those map tile adjacent with the described map tile of being specified by described unique identifier.
20. computer equipments according to claim 17, wherein, the group of described additional maps tile is designated as those map tile in the certain relative Repeat being included in the described map tile of being specified by described unique identifier.
21. 1 kinds in the network device for the method for retrieving map tile, described method comprises:
Receive the request to the map datum comprising multiple map tile from client device, wherein, the described request to map datum comprises the multiple identifiers corresponding with described multiple map tile;
Utilize one or more processor to resolve the described request to map datum, with the described multiple map tile of set identification based on unique identifier and relevant identifier;
Utilize described one or more processor from multiple map tile described in map content database retrieval; And
Asked map tile is supplied to described client device.
22. methods according to claim 21, wherein, described multiple identifier comprises the unique identifier of a map tile in described multiple map tile and the set of the relevant identifier corresponding with other map tile in described multiple map tile.
23. methods according to claim 22, wherein, the described unique identifier of the described map tile in described multiple map tile comprises latitude and longitude coordinate.
24. methods according to claim 22 or 23, wherein, the set of described relevant identifier comprise instruction relative to the described map tile in described multiple map tile position, in described multiple map tile described in the integer increments of position of other map tile.
25. methods according to any one of claim 22 to 24, wherein, resolve and the described request of map datum is comprised:
Identify the multiple entries in the described request of map datum; And
Be associated to each entry in the described multiple entry in the described request of map datum with the specific map tile in described map content database.
26. methods according to claim 25, wherein, retrieve described multiple map tile and comprise:
Generate multiple data base querying, each data base querying is corresponding with the map tile in described map content database; And
Perform described multiple data base querying with from multiple map tile described in described map content database retrieval.
27. methods according to any one of claim 21 to 26, wherein, retrieve described multiple map tile and comprise: from multiple map tile described in grid contents database and vector content-data library searching.
28. 1 kinds of tangible non-transient computer-readable mediums it storing instruction, described instruction when executed by one or more processors, makes described one or more processor enforcement of rights require method required any one of 1 to 13.
29. 1 kinds of tangible non-transient computer-readable mediums it storing instruction, described instruction when executed by one or more processors, makes described one or more processor enforcement of rights require method required any one of 21 to 27.
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